The Mark II was only sold in Japan, & this the highest and most desirable trim of this generation MKII. It has the 1JZ-GTE, a turbocharged 2.5L straight-six (found in other cars such as the MK3 Supra and ‘97 Soarer) making 280HP and 268ft-lb of torque, mated to a 5-speed manual and is RWD. It also has a lot of aftermarket support with its tuneability and body kits.
This specific model would be the best one to have in a Forza game, also along with the two body kits shown above. If anyone over at Turn 10 or PGG sees this, please consider adding this car!